JP2008295704A - Cleaning tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaning tool in which texture and dust collection performance are not damaged even after cleaning is repeated, taking into consideration dust collection performance and durability of nylon, and has excellent durability. <P>SOLUTION: The cleaning tool includes piles using spun yarn in which a sheath component is polyamide and a core component is cationic polyester. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cleaning tool that uses a spun yarn using a core-sheath composite short fiber of polyamide and polyester, has excellent dust collection, and has little change in texture.

  Conventionally, natural fibers such as cotton and linen have been used as cleaning tools such as mops because of their unique texture.

  However, these natural fibers have the disadvantages that the texture is hardened with fiber shrinkage every time they are used, the fibers fall off due to spoilage, a strange odor is generated, and the durability is significantly worse than synthetic fibers. .

  Against this background, in recent years, cleaning tools using synthetic fibers with excellent durability have been reviewed, and in particular, nylon that can be used repeatedly and has excellent durability has been reviewed. Nylon is excellent in dust collecting property because it is easily charged with static electricity, and is very suitable for a cleaning tool.

  However, nylon has a problem that the shrinkage after washing is high, the texture is hardened before and after the shrinkage, and the dust collecting property is lowered while being used, and further, the pile portion is crushed.

On the other hand, as a fiber that suppresses shrinkage, a fiber in which polyester is disposed on the core and nylon is disposed on the sheath side has been proposed (see Patent Document 1).
JP 2007-31926 A

  An object of the present invention is to provide a cleaning tool that solves the problems of the prior art and that does not impair the texture and dust collection property and is less prone to settling even after repeated cleaning. To do.

In order to solve the above problems, the present invention has the following configuration.
(1) A cleaning tool provided with a pile using spun yarn whose sheath component is polyamide and whose core component is cationic polyester.
(2) The cleaning tool according to the above (1), wherein the single yarn fineness of the spun yarn is 0.5 dtex or more and 7.0 dtex or less.
(3) The cleaning tool as described in (1) or (2) above, wherein the ratio by weight of the core component / the sheath component is 10/90 or more and 80/20 or less.

  According to the present invention, it was possible to provide a cleaning tool that has excellent texture and dust collection durability and that is less prone to settling of the pile portion even after long-term use.

  A spun yarn is used for the cleaning tool of the present invention. In the cleaning tool of the present invention, since the static electricity due to the friction between the fibers greatly affects the dust collection property, spun yarn using short fibers in which the fibers move more than the filaments is used.

  Further, different fibers such as the core-sheath type composite fiber and other synthetic fibers, single fiber fineness, and irregular cross-section fibers may be blended.

In the present invention, a spun yarn is used in which the sheath component is polyamide and the core component is cationic polyester.

  As the polyamide used for the sheath component, nylon 66, nylon 6, those using sebacic acid or isophthalic acid as the acid component, polyamides using paraxylene diamide, or copolymer polyamides using these are used. It is done. Among these, nylon 6 is preferably used from the viewpoint of cost.

  Polyamides using virgin chips may be used, but recycled polyamides can also be suitably used from an economical point of view. Recycled polyamide here refers to the so-called chemically recycled nylon 6, which is obtained by collecting nylon 6 scrap generated at the factory, depolymerizing it, returning it to ε-caprolactam, the monomer of nylon 6, and repolymerizing it. Means. Polyamides that have been recycled can also be used favorably.

  As the cationic polyester used for the core component, for example, a sulfonated aromatic dicarboxylic acid-modified polyester is used, and a modified polyester in which a compound having a sulfonic group is contained in a part of the polyester chain or terminal is used. More specifically, polyethylene terephthalate or polybutylene terephthalate, or a modified polyester obtained by copolymerizing a sulfonated aromatic dicarboxylic acid or a salt thereof with a copolyester containing these as a main component can be used. A representative example of the sulfonated aromatic dicarboxylic acid is dimethyl 5-sodium sulfoisophthalate. Dimethyl 5-sodium sulfoisophthalate is preferably used because it has a low affinity with polyamide and is likely to generate static electricity, resulting in an increased dust collecting effect.

  Although dimethyl 5-sodium sulfoisophthalate is used as a copolymerization component together with terephthalic acid, the ratio is preferably 2.0 to 10.0 mol% with respect to terephthalic acid. If the ratio of using dimethyl 5-sodium sulfoisophthalate is low, the desired effect may not be sufficiently obtained in terms of dust collection and the like. On the other hand, if the ratio used is too high, the crystal structure of the modified polyester tends to be disturbed, leading to a decrease in mechanical properties.

  The composite ratio (% by weight) of the core: sheath is in the range of core: sheath = 10: 90 to 80:20 from the viewpoints of electrostatic property, texture, spinnability / spinnability, process passability, and dyeability. It is preferable. More preferably, the core: sheath is in the range of 20:80 to 50:50.

  When the core ratio is 70% or more, sheath cracks may occur during spinning. On the other hand, if the core component is less than 15%, the influence of the polyamide-based polymer as the sheath component becomes strong, the electrostatic property is deteriorated, and the dust collection effect tends to be difficult to obtain.

  The fineness of the spun yarn of the present invention is preferably 0.5 dtex or more and 7.0 dtex or less. If it is thinner than 0.5 decitex, the texture of the mop pile becomes too soft, and the hair fall tends to be strong and the dust collecting property tends to be lowered. Conversely, if the fineness exceeds 7.0 decitex, the pile itself becomes hard, and it becomes difficult for the pile to enter the details during cleaning, which may affect dust collection. More preferably, it is 0.8 dtex or more and 4.4 dtex.

In the spun yarn in which the sheath component of the present invention is made of polyamide and the core component is made of cationic polyester, other fibers may be blended. For example, fibers having different single fiber fineness, irregular cross-section fibers, etc. are used. It is done.

  The form of the single fiber used in the spun yarn of the present invention is not limited to a concentric circular cross section, but may be a polygonal shape such as a star shape, an H shape, a triangular cross section, or an elliptical shape. Further, the core portion may be a multi-core shape instead of a single core, but it is necessary that the core component is completely surrounded by the sheath component. If the core component is exposed to the outside, it is not preferable because the core component and the sheath component are separated or peeled off.

  In the spun yarn in which the sheath component of the present invention is made of polyamide and the core component is made of cationic polyester, other fibers may be blended. For example, fibers having different single fiber fineness, irregular cross-section fibers, etc. are used. It is done.

  In the present invention, together with the spun yarn in which the sheath component is polyamide and the core component is cationic polyester, other yarns can be combined and used as a pile. As the other yarn, a heat-bonding fiber is preferably used, and is heat-fixed by heat melting. By heat-fixing, the pile can be twisted back and the form maintained, and a stable dust collecting property and texture can be maintained as a cleaning tool.

  As the heat-bonding fiber used in the present invention, polypropylene, hot-melt polyamide, copolymerized polyamide or the like is preferably used. The hot-melt polyamide or copolymer polyamide preferably has a melting point or softening point of 230 ° C. or lower. When a polymer having a melting point and a softening point exceeding 230 ° C. is used, a decrease in melting characteristics may be observed.

  Examples of the polyamide include nylon 12, nylon 11, nylon 6, nylon elastomer, polyamide formed from metaxylenediamine and adipic acid, and a polyamide copolymerized using these is also preferably used.

  In the spun yarn in which the sheath component of the present invention is made of polyamide and the core component is made of cationic polyester, other fibers may be blended. For example, fibers having different single fiber fineness, irregular cross-section fibers, etc. are used. It is done.

  The texture when mop using spun yarn is greatly influenced by the number of twists added to the spun yarn. In order to obtain a mop spun yarn with good texture, dust collection, and low untwisting, it is preferable that the number of lower twists added to the spun yarn is 80 to 300 T / M, more preferably 100 to 200 T / M. It is. The number of upper twists is preferably 50 to 150 T / M, more preferably 70 to 100 T / M.

  In the present invention, spun yarn having a sheath component made of polyamide and a core component made of cationic polyester is used as a pile, and a conventionally known one as a campus place is not particularly limited. Of these, a polyamide material that can be dyed in the same bath as the pile is preferably used in terms of cost. The woven structure of the campus is not particularly limited, and one having a fabric density that matches the thickness of the pile yarn is preferably used.

  Hereinafter, the present invention will be described in detail with reference to examples.

Evaluation methods in the examples are shown below.
1. Durability Performance A mop was used to clean a 10 m ² floor for 10 minutes / day, and each time the dust held by the pile was removed. If the remaining dust is not removed, the dust collection performance deteriorates every time the cleaning is repeated.

The number of days until settling that affects the texture change and cleaning of the pile was investigated and evaluated as follows.
◎ …… No stickiness or texture hardening even after continuous use for 3 months.
○ ・ ・ ・ ・ ・ Sag and texture change after 2 months of continuous use.
× ・ ・ ・ ・ ・ Sag and texture change after 1 month of continuous use.
2. Hot water shrinkage rate Take a sample with a total dredging length of 100m, apply initial weight of 0.1g / 1.1 decitex, measure the initial length (L1) of dredging, and remove hot water at 100 ° C after removing the initial weight Soaked in water for 30 minutes, water was removed with water-absorbing paper, air-dried, and after confirming that the water was completely dried, the initial weight of 0.1 g / 1.1 dtex was added again. The length (L2) is measured again. The hot water shrinkage is calculated by the following calculation formula.

Hot water shrinkage (%) = [(L1-L2) / L1] × 100
3. Dust collection performance Floor cleaning was performed using a mop, and sensory evaluation was performed regarding dust collection performance.
◎ …… Excellent dust collection (no residual dust after cleaning)
○ …… Good dust collection (a small amount of dust remains after cleaning)
× ・ ・ ・ ・ ・ Defective dust collection (A large amount of dust remains after cleaning)
4). Texture The mop was washed 30 times at home, and a sensory evaluation on the texture change from the initial texture was performed.
◎ …… Good texture with no change from the initial texture.
○: Bending rigidity is slightly increased from the initial texture, resulting in coarseness.
X: The texture is remarkably hard from the initial texture.
[Example 1]
Polyester copolymerized with 8.0 mol% of dimethyl 5-sodium sulfonate isophthalate as the core component, nylon 6 as the sheath component, the core-sheath composite ratio (% by weight) as core: sheath = 3: 7, spinning speed 1300 m / Spinned in minutes. Then, a composite fiber raw cotton made of concentric core-sheath composite fibers having a single fiber fineness of 1.3 dtex and a fiber length of 38 mm, which was stretched 3.0 times, crimped, cut into equal lengths and provided with a spinning oil agent. Obtained.

  Subsequently, 100% of this composite fiber was spun in a normal ring spinning process, and the number of twists in the fine spinning process was 450 T / M in the Z direction, and an English yarn number 5s (1063 dtex) was spun. Obtained.

  Next, five spun yarns and two heat-bonding filament fibers (110 dtex / 24f) made of 95 ° C. wet heat-melting polyamide copolymer resin are twisted in the S direction and combined to obtain a total fineness of 6000 dtex. After obtaining the yarn for mop, it was steam set and processed so as not to be twisted back.

This mop yarn is made into a bowl shape, immersed in hot water (hot water temperature 98 ° C.) for 5 minutes, the pile yarn is adhered, moisture is dehydrated and dried (100 ° C. × 20 minutes). And processed into a pile shape. Thereafter, the nylon 6 woven fabric was used as the campus site, the yarn for the mop had a pile length of 10 cm and 20 pieces / cm ^2, and was sewn and bonded with the same nylon 6 sewing thread to obtain a mop having about 2300 pile yarns.

In any process, winding around the roller and thread breakage were few, and there was no problem with process passability.
Comparative Example 1
Using two cotton yarns and a heat-adhesive polyethylene filament (220 decitex / 48f) with a melting temperature of 120 ° C., a 300 T / M twist was added in the S direction and combined, and the combined yarn for mop was made into a hook shape. Steam treatment was performed for 5 minutes with a steam setter (temperature: 130 ° C., pressure: 3.5 kg / m ³ ). A mop was obtained in the same manner as in Example 1 except that the spun yarn obtained was used.
Comparative Example 2
The same conditions, steps and treatments as in Example 1 were applied except that 100% nylon 6 fiber was used to obtain a mop having the same standard.

  The evaluation results for dust collection, dimensional stability, texture, and durability for each mop obtained in Examples and Comparative Examples are shown in the following table.

Claims (3)

A cleaning tool provided with a pile using spun yarn in which the sheath component is polyamide and the core component is cationic polyester. The cleaning tool according to claim 1, wherein the single yarn fineness of the spun yarn is 0.5 dtex or more and 7.0 dtex or less. The cleaning tool according to claim 1 or 2, wherein a ratio by weight of the core component / the sheath component is 10/90 or more and 80/20 or less.